What is the explicit formula for the sequence? 6, 5, 4, 3, 2, . .

Ihave trouble finding the nth term of a linear sequence

Can someone me with these two circle theorem questions asap?

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.